Casia
化学文摘题目索引通报
🗣️ 情景例句
Would you like to join me for lunch?
跟我一起吃午餐吗？
I've realized that we should stop the pollution.
我明白必须阻止公害的原因了。
for one of the necessary conditions of preservation is quick burial,
因为保存的必要条件之一是迅速掩埋，